John Vernon

David Hunter / Praetorius

Steve Ihnat

Alain Praetorius

Sabrina Scharf

Anne Novak

Edward Binns

Owen Larkdale

Fritz Weaver

Cirrak

Ramon Bieri

Mishani

John Schuck

McDaniel

Barbara Rhoades

Real Estate Woman

Roger Bowen

Alfred Blount

Woodrow Parfrey

Tyson

Lonny Chapman

Albert Treadway

Ed Flanders

Dr. Miles

Sheldon Allman

Dr. Abrams

Tony Van Bridge

Griggs

Lawrence Cook

Donnelly

Jerry Douglas

Gen. Rollins

Peggy Rea

Helen Shaw's Friend

Bill Erwin

Sam Pickering

Nicky Blair

Mr. Wilson

Marcy Lafferty

Scientist Wearing Gas Mask

Jason Wingreen

Mr. Lubbock

Paul Comi

Wilson (uncredited)